An inappropriately strong negative emotional response from a perceived personal insult. Characterized by strong feelings of shame. Frequently associated with a cessation of communication and overt hostility towards the "aggressor."

Use of this is an instant way to let the entire online world that you're a complete idiot. Originally a crass way to make fun of someone who is irrationally upset about something, is now used by total douchebags who don't have a creative or original bone in their body to troll on someone who expresses the slightest displeasure in anything. See also: You/u mad bro?

Football (American or the kind with 2 keepers) fan: Shame my team lost, but they played hard, can't ask any more that.